She also begged Isis: "Please send my son back home. He is my one and only son. I and my family need him back. Please just send my son back to me before I die and it is going to be too late for Reyaad, he's going to regret it for the rest of his life.

"Please send my son back to me and his family. We all need him."

She told Sky News: "He is honest, always caring for his family, he always wanted to be there for them. He was one of the best boys a mother could ever have or want.

"I think they are brainwashed into thinking they are going to help people. I don't know who it is but there is someone behind them keeping these young, innocent boys, brainwashing them into thinking they are going to help people. There is someone behind them, I don't know who."

The mother said the actions of her 20-year-old son had hugely impacted on her family.

"It is absolutely devastating. It has turned our lives upside down. I can't sleep or eat, I am very ill," she said.